CN108510945A - Oled pixel compensation circuit - Google Patents
Oled pixel compensation circuit Download PDFInfo
- Publication number
- CN108510945A CN108510945A CN201810184690.9A CN201810184690A CN108510945A CN 108510945 A CN108510945 A CN 108510945A CN 201810184690 A CN201810184690 A CN 201810184690A CN 108510945 A CN108510945 A CN 108510945A
- Authority
- CN
- China
- Prior art keywords
- connect
- source
- oled
- drain electrode
- enable pin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
- G09G3/3233—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix with pixel circuitry controlling the current through the light-emitting element
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
A kind of OLED pixel compensation circuit, including switch transistor T 1, T3, T4, T6, the switch transistor T 1, the Enable Pin of T3, T6 are connect with scanning drive signal；The source of T1 and the Enable Pin of T4 connect, and drain electrode connects threshold voltage output end；The Enable Pin of the T4 is also connect with the drain electrode of T3, and the source of T3 is also connect with input voltage VDD；The source electrode of T4 is also connect with input voltage VDD, and the drain electrode of T4 is connect with OLED anodes；The source electrode of T1 is also connect with the source electrode of T6, and the source of the T6 and the anode of OLED connect, and the drain electrode of T6 is connect with reference voltage Vref.It is not accurate enough to solve the extraction of prior art offset voltage, the bad problem of pixel compensation effect.
Description
Technical field
The present invention relates to oled panel display technologies more particularly to one kind effectively to inhibit TFT to OLED light emission luminance
The pixel compensation circuit of influence.
Background technology
Organic Light Emitting Diode (Organic Light Emitting Diode, OLED) can be divided into passively according to type of drive
Formula matrix driving (Passive Matrix OLED, PMOLED) and active-matrix driving (Active Matrix OLED,
AMOLED) two kinds.Wherein, PMOLED is not shone when data are not written, is only shone in data address period.This driving
Mode is simple in structure, cost is relatively low, is easier to design, and is primarily adapted for use in the display of small-medium size.
Finally, AM represents Active Matrix, is for Passive Matrix, refers to each OLED pictures
The type of drive of element.In Passive Matrix, the control of each pixel is realized by a complicated electrode network
, to realize the charge and discharge of some pixel, on the whole, the control mode relative velocity of Passive Matrix is slower, control
Precision processed is also slightly lower.And it is different from Passive Matrix, Active Matrix be then installed additional on each LED TFT and
Capacitor layers, in this way when a certain row of certain a line are powered that pixel for activating intersection, the capacitor layers in pixel can be brushed twice
Charged state is kept between new, is more rapidly controlled with more accurate pixel light emission to realize.
Since the voltage VDD in AMOLED panel links together between each pixel, when driving shines, voltage
Electric current is had on VDD to flow through.In view of VDD metal wires itself have impedance, pressure drop presence is had, the VDD of each pixel is caused
It will appear difference, lead between different pixels that there are current differences.Thus, the electric current for flowing through OLED is different, it is generated bright
Degree is also different, and then AMOLED panel is uneven.In addition, due to the influence of processing procedure, the threshold of the thin film transistor (TFT) in each pixel
Threshold voltage is all different, even if providing the voltage Vdata of identical numerical value, generated electric current still suffers from difference, this also will
Cause panel uneven.In addition, if being compensated to above-mentioned voltage using pixel compensation circuit, the meeting again of most of compensation circuit
It is too short and influence compensation effect to be limited to sweep time.
In view of this, a kind of pixel compensation circuit for AMOLED panel how is designed, to effectively improve or eliminate
Many defects such as above-mentioned panel is uneven, are the projects that related technical personnel are urgently to be resolved hurrily in the industry.
Invention content
For this reason, it may be necessary to provide a kind of new OLED pixel compensation circuit, it is not smart enough to solve the extraction of prior art offset voltage
It is close, the bad problem of pixel compensation effect.
To achieve the above object, inventor provide a kind of OLED pixel compensation circuit, including switch transistor T 1, T3, T4,
T6, the switch transistor T 1, the Enable Pin of T3, T6 are connect with scanning drive signal；The source of T1 and the Enable Pin of T4 connect, drain electrode
Connect threshold voltage output end；The Enable Pin of the T4 is also connect with the drain electrode of T3, and the source of T3 is also connect with input voltage VDD；
The source electrode of T4 is also connect with input voltage VDD, and the drain electrode of T4 is connect with OLED anodes；The source electrode of T1 is also connect with the source electrode of T6,
The source of the T6 and the anode of OLED connect, and the drain electrode of T6 is connect with reference voltage Vref.
Further, further include capacitance C1, one end of the capacitance C1 and the source of T1 connect, the drain electrode of the other end and T3
Connection.
Preferably, further include switch transistor T 2, the Enable Pin of the switch transistor T 2 is connect with luminous drive signal, the source electrode of T1
Also connected by the source electrode of T2 and T6.
Optionally, the source of T4 is connect by switch transistor T 5 with input voltage VDD, the Enable Pin and hair of the switch transistor T 5
Optical drive signal connects.
Preferably, the switching tube is thin film transistor (TFT).
It being different from the prior art, data when above-mentioned technical proposal provides memory frequency conversion by increasing buffer memory export,
So that interior will not all show interim card in the presence of when carrying out frequency conversion, and it can further reach any time progress DDR frequency conversions
Effect without influencing display.
Description of the drawings
Fig. 1 is the pixel compensation circuit diagram described in specific implementation mode；
Fig. 2 is the compensating signature schematic diagram described in specific implementation mode；
Fig. 3 is the reseting stage circuit signal schematic diagram described in specific implementation mode；
Fig. 4 is the V_th generation stage circuit signal schematic representation described in specific implementation mode；
Fig. 5 is the maintenance stage circuit signal schematic diagram described in specific implementation mode；
Fig. 6 is the glow phase circuit signal schematic diagram described in specific implementation mode；
Fig. 7 is the simulation result schematic diagram described in specific implementation mode；
Fig. 8 is the simulation result schematic diagram described in specific implementation mode.
Specific implementation mode
For the technology contents of technical solution, construction feature, the objects and the effects are described in detail, below in conjunction with specific reality
It applies example and attached drawing is coordinated to be explained in detail.
Referring to Fig. 1, a kind of OLED pixel compensation circuit, switch transistor T 1, T3, T4, T6, the switch transistor T 1, T3, T6
Enable Pin is connect with scanning drive signal；The source of T1 and the Enable Pin of T4 connect, and drain electrode connects threshold voltage output end；The T4
Enable Pin also connect with the drain electrode of T3, the source of T3 is also connect with input voltage VDD；The source electrode of T4 also with input voltage VDD
Connection, the drain electrode of T4 are connect with OLED anodes；The source of the T6 and the anode of OLED connect, the drain electrode of T6 and reference voltage
Vref connections.Switching tube described here can be the numerous embodiments such as P field-effect tube, N field-effect tube, triode, corresponding
Enable Pin be grid or base stage, remaining switch pipe end connection can be determined according to the common sense of those skilled in the art,
If we say that the source of switching tube T4 is connected by T5 with supply voltage VDD, in the case where switching tube is triode, as
The source electrode of triode T1 and the emitter of T5 connect, and the collector of T5 is connect with supply voltage VDD again, and field is replaced in triode
Under the embodiment of effect pipe, it is only necessary to corresponding that corresponding source electrode, drain electrode are installed.Next we are that TFT is thin with switching tube
It is illustrated for film transistor, referring to Fig. 1, the switch transistor T 1, the Enable Pin of T3, T6 and scanning drive signal scan n
Connection；The source of T1 and the Enable Pin of T4 connect, and drain electrode connects threshold voltage output end；The Enable Pin of the T4 also with the drain electrode of T3
Connection, the source of T3 are also connect with input voltage VDD；The source electrode of T4 is also connect with input voltage VDD, and the drain electrode of T4 and OLED are just
Pole connects；The source electrode of T1 is also connect with the source electrode of T6, and the source of the T6 and the anode of OLED connect, drain electrode and the reference electricity of T6
Press Vref connections.Wherein scanning drive signal is that the time series pulse signals of the row and line spacing triggering of pixel are shone and driven
Dynamic signal is the signal that driving panel shines.
Here 2 are please see Figure, is the time diagram of compensating signature, as we can see from the figure according to scanning drive signal scan
And the overlapping of luminous drive signal Em produces total four-stage, we are respectively designated as reseting stage t1, threshold value electricity
Pressure extraction and data write phase t2, maintenance stage t3 and luminous period t4.More specifically, main multiple in reseting stage t1
Position A and B point voltages, mainly extract the VTh of T4TFT, in the maintenance stage, each potential voltage is constant, finally exists in write phase t2
Glow phase, when driving OLED device, the driving voltage (anode voltage) for extracting OLED is realized to OLED device benefits
It repays, Vdata can extract more accurate data voltage, can achieve the effect that accurate compensation pixel voltage.Therefore, scheming
In further embodiment shown in 3, by the setting of T1, T3, T4, T6, enable to, after the t1 stages start, T1, T3,
T4, T6TFT are fully open, and C points current potential is Vdata at this time, and A point current potentials are VDD, and B point current potentials are Vref, and wherein VDD is high electricity
Pressure ensures that T4TFT can be opened, and Vref is low potential, ensures that OLED device are closed, this stage completes A, B and C node electricity
The reset of position.Therefore Vdata can extract driving voltage (anode voltage) realization of OLED to OLED device compensation, Vdata
More accurate data voltage can be extracted, above-mentioned design can reach accurate reset present invention pixel compensation circuit voltage
Effect.
In further embodiment, our scheme further includes switch transistor T 2, T5, the Enable Pin and hair of the switch transistor T 2
Optical drive signal connects, and the source electrode of T1 is also connected by the source electrode of T2 and T6.The source of T4 passes through switch transistor T 5 and input voltage
VDD connections, the Enable Pin of the switch transistor T 5 are connect with luminous drive signal.In turn, become low level in luminous drive signal
When, this circuit can control the closing of T2, T5 so that and when luminous drive signal is closed, C and B point voltages remain unchanged,
Respectively Vdata and Vref voltages, and A point voltages change, starting voltage of the A points in this stage is VDD, due to
T4TFT is opened, and A point voltages can slowly be lower, and A points voltage can flow to Vref through T3, T4 and T6, when A points and B point voltage differences Vgs
(T4)=Vth when, T4 close, A points voltage becomes Vref+Vth at this time.A point voltages are related to T4TFT Vth, complete T4TFT
Vth is extracted.Therefore by above-mentioned switch transistor T 2, the design of T5, the effect for being more precisely carried out voltage difference Vth extractions can be reached
Fruit.
Further include capacitance C1, the source of one end and T1 of the capacitance C1 in some other further embodiment, in figure
Connection, the drain electrode connection of the other end and T3.By above-mentioned design, C1 can be after shining drive signal, turntable driving letter
Number terminate before, whithin a period of time maintain BC points voltage, enable A point voltages during this period of time maintain electric discharge reduce shape
State so that the extraction numerical value of final T4TFT Vth is more accurate, preferably solves the problems, such as pixel voltage compensation.
As a preferred embodiment, including TFT thin film transistor (TFT)s T1-T6, capacitance C1；The switch transistor T 1, T3, T6
Enable Pin connect with scanning drive signal；The source of T1 and the Enable Pin of T4 connect, and drain electrode connects threshold voltage output end；It is described
The Enable Pin of T4 is also connect with the drain electrode of T3, and the source of T3 is also connect by switch transistor T 5 with input voltage VDD；The source electrode of T4 is also
It is connect with input voltage VDD by switch transistor T 5, the drain electrode of T4 is connect with OLED anodes；The Enable Pin and hair of the switch transistor T 5
Optical drive signal connects；The source electrode of T1 is also connected by the source electrode of T2 and T6, the Enable Pin of switch transistor T 2 and luminous drive signal
Connection, the source of the T6 and the anode of OLED connect, and the drain electrode of T6 is connect with reference voltage Vref.One end of the capacitance C1
It is connect with the source of T1, the drain electrode connection of the other end and T3.
Based on apparatus described above, it can realize that the specific compensation flow of one kind of following article introduction, Fig. 2 are that the present invention mends
Signal schematic diagram is repaid, amounts to four-stage, respectively reseting stage t1, V_th generation and data write phase t2, maintains
Stage t3 and luminous period t4.More specifically, in reseting stage, it is main to reset A and B point voltages, it is mainly extracted in compensated stage
The VTh of T4TFT, in the maintenance stage, each potential voltage is constant, finally in glow phase, when driving OLED device, and extraction
The driving voltage (anode voltage) of OLED, which is realized, compensates OLED device.It is the detailed process in each stage below
Fig. 3 illustrates the circuit diagram in t1 reseting stages：The all high potentials of scan and Em signals, T1~T6TFT
Fully open, C points current potential is Vdata at this time, and A point current potentials are VDD, and B point current potentials are Vref, and wherein VDD is high voltage, is ensured
T4TFT can be opened, and Vref is low potential, ensure that OLED device are closed, this stage completes answering for A, B and C node potential
Position.
Fig. 4 illustrates the circuit diagram in t2 V_th generation stages：T2 and T5TFT is closed, and other TFT are still normally beaten
It opens, C and B point voltages remain unchanged, respectively Vdata and Vref voltages, and A point voltages change, and A points are in this stage
Starting voltage is VDD, and since T4TFT is opened, A point voltages can slowly be lower, and A points voltage can flow to Vref through T3, T4 and T6, when
A points and when B point voltage difference Vgs (T4)=Vth, T4 is closed, and A points voltage becomes Vref+Vth at this time.A point voltages and T4 TFT
Vth is related, completes T4 TFT Vth extractions.
Fig. 5 illustrates the circuit theory schematic diagram of maintenance stage：Scan and Em signals are all low potential, and all TFT are
It is closed state, therefore each point current potential remains unchanged.
Fig. 6 is the circuit theory schematic diagram of glow phase：Scan is still low, and Em signals become high potential, T2, T5 and
T4TFT is opened, and other TFT are closed,
Each point potential change is as follows at this time：
Since OLED is in glow phase at this time, B point current potentials are OLED driving voltages V_OLED
B：V_OLED
T2TFT is opened, and C point current potentials are changed into V_OLED by Vdata
C:V_OLED
A points current potential can be by capacitance C coupling effects, and voltage of the both ends capacitance C in T2 the and T3 stages is Vdata (C respectively
Point) and Vth+Vref (A points), when to the T4 stages, C point voltages become V_OLED, therefore A point voltages become：
A：Vref+Vth-Vdata+VOLED
The above results are to think that A point current potentials are by 100% coupling effect of capacitance, i.e. capacitance C is outer without other parasitic electricity at A points
Hold.
There is saturation region current formula Ioled=1/2*k* (VGS_T4-VTh)2It can obtain, the final driving current of OLED device is：
Ioled=1/2K (Vref-Vdata) ^2
(K is and the relevant parameter such as size, mobility of TFT), IoledOnly data signals and reference voltage Vref
Correlation, and and Vth_T4It is unrelated with V_OLED；The threshold voltage of compensation T4 transistors is elegant in turn and OLED device driving voltage becomes
Display caused by changing is uneven.
Fig. 7 and Fig. 8 provides the simulation result of the present invention, wherein Fig. 7 is I under OLED device driftsoledVariation, Fig. 8
Deteriorate lower OLED anode voltage variations for TFT device.It can see in two width figures, it is of the invention compared with traditional 2T1C
The voltage performance of compensation circuit is relatively flat steady, illustrates that the pixel compensation circuit that scheme as above describes dislikes TFT and OLED device
Change has good compensation effect.Prove that OLED compensation circuit provided by the invention effectively can inhibit drive transistor threshold voltage to become
Change and influence of the OVDD impedance grounds unevenness to OLED device light emission luminance.
It should be noted that although the various embodiments described above have been described herein, it is not intended to limit
The scope of patent protection of the present invention.Therefore, based on the present invention innovative idea, to embodiment described herein carry out change and repair
Change, or using equivalent structure or equivalent flow shift made by description of the invention and accompanying drawing content, it directly or indirectly will be with
Upper technical solution is used in other related technical areas, is included within the scope of patent protection of the present invention.
Claims (5)
1. a kind of OLED pixel compensation circuit, which is characterized in that including switch transistor T 1, T3, T4, T6, the switch transistor T 1, T3,
The Enable Pin of T6 is connect with scanning drive signal；The source of T1 and the Enable Pin of T4 connect, and drain electrode connects threshold voltage output end；Institute
The Enable Pin for stating T4 is also connect with the drain electrode of T3, and the source of T3 is also connect with input voltage VDD；The source electrode of T4 also with input voltage
The drain electrode of VDD connections, T4 is connect with OLED anodes；The source electrode of T1 is also connect with the source electrode of T6, the source of the T6 and OLED's
Anode connection, the drain electrode of T6 are connect with reference voltage Vref.
2. OLED pixel compensation circuit according to claim 1, which is characterized in that further include capacitance C1, the capacitance C1
One end and the source of T1 connect, the drain electrode of the other end and T3 connection.
3. OLED pixel compensation circuit according to claim 2, which is characterized in that further include switch transistor T 2, the switch
The Enable Pin of pipe T2 is connect with luminous drive signal, and the source electrode of T1 is also connected by the source electrode of T2 and T6.
4. OLED pixel compensation circuit according to claim 1, which is characterized in that the source of T4 by switch transistor T 5 with it is defeated
Enter voltage VDD connections, the Enable Pin of the switch transistor T 5 is connect with luminous drive signal.
5. according to claim 1-4 any one of them OLED pixel compensation circuits, which is characterized in that the switching tube is film
Transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810184690.9A CN108510945B (en) | 2018-03-06 | 2018-03-06 | OLED pixel compensation circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810184690.9A CN108510945B (en) | 2018-03-06 | 2018-03-06 | OLED pixel compensation circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108510945A true CN108510945A (en) | 2018-09-07 |
| CN108510945B CN108510945B (en) | 2020-04-21 |
Family
ID=63377031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810184690.9A Active CN108510945B (en) | 2018-03-06 | 2018-03-06 | OLED pixel compensation circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108510945B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109192139A (en) * | 2018-09-26 | 2019-01-11 | 福建华佳彩有限公司 | A kind of pixel compensation circuit |
| CN110827757A (en) * | 2019-10-28 | 2020-02-21 | 福建华佳彩有限公司 | OLED circuit compensation method |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202855271U (en) * | 2012-11-13 | 2013-04-03 | 京东方科技集团股份有限公司 | Pixel circuit and display apparatus |
| CN202948704U (en) * | 2012-12-24 | 2013-05-22 | 北京京东方光电科技有限公司 | Pixel circuit and display device |
| CN103165080A (en) * | 2013-03-21 | 2013-06-19 | 京东方科技集团股份有限公司 | Pixel circuit and driving method and display device thereof |
| CN103236237A (en) * | 2013-04-26 | 2013-08-07 | 京东方科技集团股份有限公司 | Pixel unit circuit and compensating method of pixel unit circuit as well as display device |
| CN203179479U (en) * | 2013-04-26 | 2013-09-04 | 京东方科技集团股份有限公司 | Pixel unit circuit and display apparatus |
| US20150161944A1 (en) * | 2013-04-24 | 2015-06-11 | Boe Technology Group Co., Ltd. | Pixel driving circuit, array substrate and display apparatus |
| CN104867442A (en) * | 2014-02-20 | 2015-08-26 | 北京大学深圳研究生院 | Pixel circuit and display device |
| CN105427809A (en) * | 2016-01-04 | 2016-03-23 | 京东方科技集团股份有限公司 | Pixel compensation circuit and AMOLED display apparatus |
| CN106910467A (en) * | 2017-04-28 | 2017-06-30 | 深圳市华星光电技术有限公司 | Pixel-driving circuit, display panel and image element driving method |
-
2018
- 2018-03-06 CN CN201810184690.9A patent/CN108510945B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202855271U (en) * | 2012-11-13 | 2013-04-03 | 京东方科技集团股份有限公司 | Pixel circuit and display apparatus |
| CN202948704U (en) * | 2012-12-24 | 2013-05-22 | 北京京东方光电科技有限公司 | Pixel circuit and display device |
| CN103165080A (en) * | 2013-03-21 | 2013-06-19 | 京东方科技集团股份有限公司 | Pixel circuit and driving method and display device thereof |
| US20150161944A1 (en) * | 2013-04-24 | 2015-06-11 | Boe Technology Group Co., Ltd. | Pixel driving circuit, array substrate and display apparatus |
| CN103236237A (en) * | 2013-04-26 | 2013-08-07 | 京东方科技集团股份有限公司 | Pixel unit circuit and compensating method of pixel unit circuit as well as display device |
| CN203179479U (en) * | 2013-04-26 | 2013-09-04 | 京东方科技集团股份有限公司 | Pixel unit circuit and display apparatus |
| CN104867442A (en) * | 2014-02-20 | 2015-08-26 | 北京大学深圳研究生院 | Pixel circuit and display device |
| CN105427809A (en) * | 2016-01-04 | 2016-03-23 | 京东方科技集团股份有限公司 | Pixel compensation circuit and AMOLED display apparatus |
| CN106910467A (en) * | 2017-04-28 | 2017-06-30 | 深圳市华星光电技术有限公司 | Pixel-driving circuit, display panel and image element driving method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109192139A (en) * | 2018-09-26 | 2019-01-11 | 福建华佳彩有限公司 | A kind of pixel compensation circuit |
| CN109192139B (en) * | 2018-09-26 | 2024-05-10 | 福建华佳彩有限公司 | Pixel compensation circuit |
| CN110827757A (en) * | 2019-10-28 | 2020-02-21 | 福建华佳彩有限公司 | OLED circuit compensation method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108510945B (en) | 2020-04-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105679244B (en) | AMOLED pixel-driving circuits and image element driving method | |
| CN108269531B (en) | OLED pixel compensation circuit | |
| CN104700778B (en) | AMOLED pixel-driving circuits and image element driving method | |
| CN104575387B (en) | AMOLED pixel driving circuit and method | |
| WO2015180419A1 (en) | Pixel circuit and drive method therefor, and display device | |
| CN104680980B (en) | Pixel driving circuit, driving method thereof and display device | |
| CN102473376B (en) | Display device | |
| WO2018098874A1 (en) | Pixel circuit, driving method therefor, and organic light-emitting display | |
| CN108122541A (en) | The compensation method of organic light emitting diode display and its drive characteristic | |
| US20160232840A1 (en) | Oled display panel with threshold voltage compensation and driving method thereof | |
| WO2016150372A1 (en) | Pixel circuit and drive method therefor, and display device | |
| CN105590955A (en) | Pixel circuit and driving method thereof, and active matrix organic light emitting display | |
| CN101546519A (en) | Image displaying apparatus and image displaying method | |
| CN106504701B (en) | AMOLED pixel-driving circuit and image element driving method | |
| CN106504699A (en) | AMOLED pixel-driving circuits and driving method | |
| CN107393477B (en) | Top emitting AMOLED pixel circuit and its driving method | |
| CN101714329A (en) | Organic light emitting diode display | |
| CN105427805A (en) | Pixel driving circuit and method, display panel, and display apparatus | |
| CN108335671B (en) | AMOLED pixel-driving circuit and driving method | |
| CN107393478A (en) | Pixel internal compensation circuit and driving method | |
| CN107123397A (en) | AMOLED pixel-driving circuits and image element driving method | |
| WO2018188149A1 (en) | Oled pixel driving circuit and oled display device | |
| CN107093405A (en) | AMOLED pixel-driving circuits and image element driving method | |
| CN107424567A (en) | OLED pixel drive circuit and OLED display | |
| CN108269534A (en) | AMOLED display device and its driving method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |